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Alternatives to dispatch_get_current_queue() for completion blocks in iOS 6?
...ock should run in the background, while the completion block should run in whatever queue the method was called.
7 Answers
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Java regex email
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@T04435 The regex in you link does not escape the DOT. What makes the regex functionally wrong and this also has a serious performance impact
– TomWolk
Jun 2 '16 at 8:57
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For..In loops in JavaScript - key value pairs
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why not to use variables given in question example? What here is k, target and property? For me, non-javascripter this area of undefined :)
– Gediminas
Mar 30 '17 at 13:24
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Is there an auto increment in sqlite?
... column points at (is an alias for) the automatic ROWID column.
ROWID (by whatever name you call it) is assigned a value whenever you INSERT a row, as you would expect. If you explicitly assign a non-NULL value on INSERT, it will get that specified value instead of the auto-increment. If you expl...
Undoing a git rebase
...s interactive or both; it's not about undoing a successful rebase which is what the question is about. You would either use rebase --abort or reset --hard depending on which situation you were in. You shouldn't need to do both.
– CB Bailey
Jun 15 '11 at 20:40
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Get decimal portion of a number with JavaScript
... an acceptable answer? If I were the asker I would want an answer of .3. What we have here is false precision, and my experiments with floor, %, etc indicate that Javascript is fond of false precision for these operations. So I think the answers that are using conversion to string are on the righ...
psycopg2: insert multiple rows with one query
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Just confirmed this improvement myself. From what I've read psycopg2's executemany doesn't do anything optimal, just loops and does many execute statements. Using this method, a 700 row insert to a remote server went from 60s to <2s.
– Nelson
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MySQL Cannot Add Foreign Key Constraint
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i'm not sure exactly what you are saying, but I found that my syntax was incorrect. I was doing: alter table aircraft add constraint fk_somehting_unique foreign key (operator_id) references organisation, but should have done: alter table aircraft...
Extracting text OpenCV
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what's the difference between filling the contour and drawing it? I found a code without the filling phase here: stackoverflow.com/a/23556997/6837132
How to copy Docker images from one host to another without using a repository
...ing here, loaded the image and have a <none> for REPOSITORY and TAG. What is the right way to bring the name and tag back? @wisbucky
– Ulfhetnar
Jan 10 '18 at 7:37
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